Of chattanooga



W. G. VHEELAND.

CROWN BLOCK FOR WELL DRILLING APPARATUS. APPucATlon mso SEPT 15. |919.

1,3618375." Patented Fb. 15,1921.

`breein .sheave'nnd shaft on UNITED STATES PATENT OFFICE.

WALTER G. VBEELAND,

0F CHATTANOOGA, TENNESSEE, ASSIGNOR TO LUCEY MANU- PORATION 0FTENNESSEE.

CROWN-BLOCK FOP WELL-DRILLING APPABA'IS.

Bpecicatlon o! Letters Patent.

Patented Feb. 1.5, 1921.

Application lied September 15, 181B. Serial No. 323,727.

1' 'o all 'wlw/nI 'it may concern Be it known the-t I, W'Amini G'.VREELAND, e citizen of the United States,- rosiding et Chattanooga, in.the county of' Ham` ton and State of Tennesseqheve invented certain newand useful Improvements" in Grown-'Blocks for VVellLDrilling A pnrutus;and I do declare the following toll): clear, and exact description; oithe invention, such us will enable others skilled; in the nrt to .whichit appertnins to -mnke and use the seme, reference being Vhad totheaccom'- pnnying drawings, und tothe letters n nd igures oil" referencemerked'thereon, which form e part of this specification.

M invention relates to' crown blocks 4for oil erricks. It has foritsprimary object to provide un improved construction for spacing eport andclamping together Vand the beams which support theshafts on which theshea-ves nremounted; and also to provide en improved-'construction o;which the same is mounted ond merinerof` holding theshe'eve Asheftinposition on-th'ebenms. Tothe elccomplishment -oithe foregoing and suchother objects vns may hereinnit'er appear the invention consists inthefeatures hereinniter described :md thensou rbt to be clearly de fined bythe claims, relerence being had to the nccorn .unyin drawing'forming nAport hereof 'um in w ieh''V Figure l is o 4pien view olf4 n crownbloek4 constructed in ecoordenceiviiththe present invention, nseven pull`ecrown block'bein'g selected 'for purposes o illustration;

Fig. 2 iso side View of Fig. 1, one o sheeve show the oiling meansy theFig. 3 isl en end viewof thecrown block,4

one of the sheaves and its shaft and its .snpporting beams beinlg insection.

In thedrewingt e beams 1 of the crownblock are five in number and formedof I meto). bars or beams with two offthe beams extended 'forward of theothers to receive the send line shextve es illustrated. The beams arespaced veport by spacer-frames 2 inserted ybet-Weenthebeems et theirends so that the corners of thefrnmes will fltin the `angles of the websendenges of the beams as shown inFg. 3, the. beams nndgspacerf 4framesbeing tied together by doublemeaded bolts Bupessed through the beams endspacer@ e a ful-l,

hubs and .shet being sectionedtoV4 irnmes.. The s acer-frames form aquedrangular brace Jetween the beams nt their ends and having theircorners fitting in the angles betweenthe webs and lianges of the bee'msand securedby relatively long double heeded bolts tothe beams, e. verystrong, stzible and braced structure is formed.

@n top 4of theIbenms rest the shafts which support the safnddine sheeve5, the

casing sheaves@ and thedrillfnw line sheeve '4'. Asench of these shafts'has the seme feetnres of construction end is attached to the beams inthe some manner, the some designating lreference numeral will be usedfor euch. The shafts nre designated by the numerals 8. Ent-h shaft iscored with o, cenf trnlhole 9,- nnd et the ends with angulurly disposedholes 10 designed to receive the engnlnrly disposed hook-bolts 1.1.which will sccure the'shnftsto the Ibeams, the lower por tions of theholes 10 being square oren ulor inA crosssection tol prevent thehoolrebo ts 11 4romtnrm'ng as their nuts' nre tightened. The shaftsnrejormed with :t centrally en- )urged portion. l2 which will bemachined be flattened so to sont firmly on the top oi the beams, :indthe under portion of the enlnrgernent 12 ornis at each4 end thereof nshoulda-r1?, against which will abnt the in'- ner edges' of` the topHnnges ofthe I beams on which the shafts rest. When the shafts are''.ormedlnnd fitted as described 'and the singularly dis osed hook-boltsare applied vwith then' hoo r ends gripping the flanges of the-I beamsand their' nuts 14; are tightened u p the bolts will tend to drew on orpull the -befuns one-'toward the other with the edges of the `'top flanes oi" the beams bearing :n.geinstthe shou ders on the shafts so thatany shock transmitted to one beam or any tendency of one benin to buckleis transferred toand resisted bv the other beom on which the shzitrests. nder this construction all thebeems of the crown-block are tiedtogether' by ineens of the sheeve or pulle shafts and their attachinghook-bolts ns we l as by the spscing-frmnes end-their securing bolts atopposite ends of the beams and thus n very strong end durable structureis provided. When the nuts of the hook-bolts are loosenedthe sheeve endits shaft may be positioned in the I beams endthen securely locked orclamped in position by tightening the nuts on the bolts.

Each pulley or sheave is formed with a hollow hub 15 divided by acentral partition 16 with communicating parte 17 and is provided with abronze bushing y18 to fit the ineehined ei'ilargement oi.' the shaft.The bushing is formed with recesses or transverse openings I9 to receivea fibrous motorini 20 which will bear against the machined enlargementof the shaftyand receive oilfrom the hollow hnbof .the shea-ve to whichthe oil may be supplied Ythrough a capped opening 2l so as to lubricatethe boerin surface be tween the-bushing and its sha. t.

I- have illustra-tod and described the preferred details of constructionvof the various parte but it is to be understood that changes may bemadetherein and essential features ofv the invention retained.

Havingde'scribed 4my invention and set forth its merits what I claim is:

l. .A crown-block comprising parallel beams, a. sheave sustaining; shaftresting upon the beams and formed with shoulders constitutin f abutmentsfor portions o the` bea-ms, an( bolts extending nnvularly in oppositedirections through the s eave sustaining shaft and engaging-upper sideportions ing the bolts'to tie together the shaft and beams.

parallel shaft 4and beams to ether.

' beams with the 4,crown-bloc comprising parallel flanged beams, aspacing frame'between the corners of the frame fitting of the beams',and means-for tighten-V in theangle of the webs and flanges of the beamsto form a quadrangular brace, and tie bolts passin through the beams andspacing-frame or tying the frame and beams together and prevent movementof the quadrangular brace.

e. A crown-block comprising parallel flanged beams, a spacing-framebetween the beams, bolts Passing throughthe beams and frame for tyinvthesame together, a sheave sustaining shai; resting uponv the beams andhaving a,- shoulder constitutnv an abutment for :the flanged portion oft e beams, and bolts Jassin angularlyt' in op osite clirec- 60 tions troug said sha and he d. in clampingen 'agement with the upper flangedportionl o the beam.Y

5'. A. crown-block l flanged beams, a. spacing-frame'between the 65beams, bolts passing through the beams and 'frame for tying the 'sametogether, a. sheave sustaining shaft restinvupon the beams; and boltspassing angular y in opposite .directions through said shaft and held inclamping engagement with the u per portionsof the'beains und serving toltie tbe shaft und beams together.

6. A crown-bloelr r comprising 4parallel flanged beams, a shearesustaining shaft restlnw upon the vbeams andformed with a centra lyenlarged portion, -asheave formed with a hollow hub and internal lonshin,litted to the enlarged central portion o? the shaftnind bolts passingan ularly in oppo- 20 site directions through the s aft and havingclamping engagement with the u )per flanges oi the beam to draw theenlarge portion oi the shaft and the flanges of the beam one toward theother. v Y

4In testimony whereof I aix my signature in presence of two witnesses.

WALTER G; VREELAND Witnesses:

V `H. THA'roHnn,

Raxn E.` FAIR.

comprising parallel

